Beseler Dichro 45 - Not 45S help

[MrBrowning]

I have a Beseler Dichro 45 color head and am having problems with it.

First I'd like to say that I've hooked everything up per the diagram in the manual that I found online. The fan turns on, the lamp works and the filter dials work. What I'm having a problem with are the readouts for the filtration. No matter what I do I can't get them to light up. I wanted to use it to print the other night but since I couldn't figure out how much filtration was coming though I went back to the 23C to print. Any ideas on why the readout isn't working?

Thanks.

Link to the manual here

 

[frobozz]

Have you tried reseating all the little circuit boards in their connectors (with the power off, of course!) I owned a few of these and they got a little flaky when they sat around unused for a while.

Duncan

 

[MrBrowning]

Have you tried reseating all the little circuit boards in their connectors (with the power off, of course!) I owned a few of these and they got a little flaky when they sat around unused for a while.

Duncan

I have not tried that but I will take a look and try it tonight.

 

[MrBrowning]

I opened it up when I got home tonight and did what I felt comfortable with. No luck. So wither I missed something or what I did didn't help.

 

[Kilgallb]

I have the same issue with my Beseler. Do this, it works.

Open up the top and remove and reseat all the large connectors from the power transformer to the circuit card nearest the left hand side of the unit.

Usually the AC Center tap from the transformer goes loose. You probably need to remove the other circuit cards to get good access to the circuit card. (Use a cell camera to photograph the connections before you start disassembly)

Do not use any sort of cleaners or burnishing tools on the connectors or the pins on the board. This will wreck them.

If you do not have the confidence to do this find a older fifty something electronics tech to do the work. This technology is in their wheel house.

One other thing, the trigger circuit from your timer to the Beseler is Hi-Z so it can trigger falsely or stay on all the time if you use a digital timer. To fix this place a parallel resistive load in parallel with the AC output of the timer circuit that feed the beseler. An AC adaptor or a 1000 ohm resistor work well. I feed my Graymark to a power bar and plug in the beseler timer connection (two prong AC plug) and the AC adaptor for my darkroom radio to the power bar.

 

[Kilgallb]

Oh yes, there is a potentiometer under the unit that is used to set the brightness of the display. The cable for the device to the circuit board can go intermittent.

 

[MrBrowning]

Okay I pull the boards and put it back together and the lights are ON. However now they are flashing (magenta & cyan) and saying "Filter Out" any ideas what this mean or how to fix it? I went back though and double checked my connections so I don't think its that I forgot to plug something in.

 

[frobozz]

Doesn't that just mean you have it in white-light (focusing) mode and need to move the little lever back into the filter position?

Duncan

 

[MrBrowning]

It was doing it regardless of the position the lever was in. I went back down on a whim and the board nearest the mixing chamber wasn't fully seated. It's working now. Thank you both very much.